In depth analysis of the activity characteristics,sequence parameters,and sequence types of the Wushi MS7.1 earthquake sequence on January 23,2024 shows that the aftershock sequence of the Wushi MS7.1 earthquake is rich,and the intensity of seismic activity decays slowly,showing a fluctuating attenuation characteristic;The overall attenuation of earthquake frequency is relatively fast.The aftershocks are mainly distributed at the junction of the basin and mountains,with a length of about 200 km and a width of about 150 km,and are generally distributed in the NE direction.Before 4 strong aftershocks with MS＞5.5,there was a certain degree of low p-values and h-values.Based on the analysis of the energy release ratio,b-value,and the difference in magnitude between the main shock and the maximum aftershock of the largest earthquake in the sequence,the Wushi Ms7.1 earthquake sequence on January 23,2024 belongs to the main shock aftershock type.
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